Keystone Gray vs Mount Etna
Both from Sherwin-Williams's palette. Hue-wise, Keystone Gray belongs to the greige-grey family and Mount Etna to the blue-grey family. Keystone Gray (LRV 29) reflects noticeably more light than Mount Etna (LRV 6), a difference of 23 points that becomes especially apparent in rooms with limited natural light. Keystone Gray runs warm while Mount Etna is decidedly cool, which means they'll respond very differently to warm vs cool light sources. With a ΔE of 34.4, the contrast is hard to miss. These aren't variations on a theme — they're two different answers to the same question. Below you'll find 1 real-room photo comparison where both colors appear side by side, plus 5 simulated room previews.
Keystone Gray vs Mount Etna in Real Spaces
1 real room side by side. Seeing Keystone Gray and Mount Etna in actual rooms makes the difference concrete; browse the spaces below to get a feel for how each color lives on a wall.
Dining Room
A dining room lit by a dimmed pendant or candles is one of the most forgiving environments for paint — warm light softens almost everything. Keystone Gray returns significantly more light to the room — in a smaller or darker space, that difference in perceived brightness is hard to miss.
Color Details
Keystone Gray vs Mount Etna Simulated Comparison
5 simulated room previews — drag the slider on each to see Keystone Gray on one side and Mount Etna on the other.
Digital color is approximate. These simulations are generated from the manufacturer's hex values and overlaid on grayscale room photos — your screen's calibration, brightness, and viewing angle all affect how they render. Before committing to either color, test physical samples in your own space under the light you actually live with.